PBE forums are dead, so where do we post so Riot sees issues? Reddit?

I see a lot of news about Red posts and Red replies to Reddit and even Twitter. Yet Riot has their own official PBE forums but no one uses them. HOT topic post has 11 up votes....... Where do we voice out issues and feedback that will show its an issue? I find it hard to believe that its spread out over all these Social Media. If Twitter has 20 replies, Reddit has 10, Facebook 5 and PBE forums 5 thats 40 people with an issue and yet Riot only sees it as 12.5% of weight of the issue. The PBE forums has died off from 2 years ago when it was as active as live Fourms.
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